The Choice of Sliding Load Positions to Improve Network Analyser Calibration

Using a sliding load for the calibration of a network analyser a wrong choice of sliding load positions can cause an incorrect calibration and lead to errors in the corrected measurements of an unknown reflection coefficient. The frequency dependence and error sensitivity have been studied for two distributions of the sliding load positions which are both easy to use. Application formulas are presented for the sliding load used with these data point distributions.